This is likely an upgraded 512K, with an aftermarket RAM upgrade, not a Plus, since the back of his case says 512K, so it would not accommodate the Plus port configuration. Would love to see a picture of that logic board that soldered the 1MB RAM to the original board, rather than a piggy-backed daughter board. On a stock 512K that would require some fancy multiplexing! :beige:

Sorry to say Mactjaap, for all ostensible purposes you are more than likely running a Mac Plus with 128K ROMs, despite what the case says. So, while still impressive, it's quite easy to get a Plus serving up files on the Internet. Much harder to get a 512K of any sort online. That extra 512K of RAM may be helping you more than you realize.